A tentative four-year agreement with wage increases totaling 15 percent was reached late Monday to end a machinists' strike that has shut down Boeing Co. commercial airplane operations since Sept. 6.
Boeing and Machinists union representatives also said the deal would enhance job security, the thorniest issue in the dispute.
Francis "Frank" Larkin, a spokesman for the International Association of Machinists and Aerospace Workers in Washington, told The Associated Press the deal was reached shortly before 9 p.m. EDT Monday (0100 GMT Tuesday), in the fifth day of talks at Federal Mediation and Conciliation Service headquarters in Washington and the 52nd day of the walkout.
In a news release, Boeing Commercial Airplanes President Scott E. Carson said the agreement "rewards employees for their contributions to our success while preserving our ability to compete."
Boeing spokesman Tim Healy in Seattle said the settlement includes varying degrees of change in all three parts of the contract that deal with outsourcing _ provisions for subcontractors to deliver parts and supplies to the shop floor, procedures for the union to bid for work before it is outsourced and a section on maintenance work.
Healy said it took until Saturday to reach agreement on job security, with the two successive days of talks devoted primarily to economic issues.
Mediators called the two sides to the table last Thursday under a news blackout.
According to a statement issued by Machinists District Lodge 751 President Tom Wroblewski, the deal provides:
_ Annual wage increases of 5 percent, 3 percent, 3 percent and 4 percent, compared with a total of 11 percent over three years in Boeing's last pre-strike offer, as well as additional hourly rate increases for low-seniority workers.
_ Bonuses of $5,000 or 10 percent of the previous year's earnings, whichever is greater, in the first year, then $1,500 in the second year, $1,500 in the third year and none in the fourth, compared with a single pair of bonuses totaling an average of $6,400 this year in the previous offer.
_ A boost in the pension formula to $81 per year of service next year and to $83 per year in 2012, compared with $80 per year of service in the last offer.
_ Preservation of the current medical cost structure and benefits through 2012, rather than a number of changes Boeing had sought to shift more of the cost onto workers.
_ Stronger provisions for the union to bid against subcontractors for work; a revised agreement to protect about 2,200 facilities and maintenance jobs through the life of the contract; expanded job protection for another 2,920 forklift drivers, environmental control personnel, inventory clerks and other workers, and limits on vendor deliveries to the shop floor.
The union's statement said the pact was unanimously endorsed by IAM negotiators and will be submitted for a ratification vote in three to five days. A simple majority is required for approval.
"This tentative agreement is the result of hard work and great sacrifice by many people," the union's aerospace coordinator and chief negotiator, Mark Blondin, said in the statement, "but no one deserves more credit than the workers at Boeing, who conducted themselves with dignity and determination throughout this ordeal.
"On behalf of the entire negotiating committee, I want to say it has been our honor to serve as their representatives."
The walkout began three days after Boeing's last offer was rejected with an 87 percent strike vote. Two days of last-ditch talks to avoid a strike failed, and another two-day round of negotiations collapsed Oct. 13. Mediators were involved in both of those efforts.
In the final talks, mediation service Director Arthur F. Rosenfeld said in a news release, "Both sides showed professionalism and a willingness to roll up their sleeves and to stick with the difficult task in front of them."
Blondin said the sticking point in the last unsuccessful round of talks was Boeing's insistence on moving to replace about 2,000 union workers who distribute parts, deliver materials and perform similar tasks with outside suppliers and subcontractors.